Cesium carbonate → HCID 11704110, Verbindung

Reaktionsgleichung

[Cl:1][C:2]1[CH:19]=[C:18]([O:20][CH3:21])[C:17]([O:22][CH3:23])=[CH:16][C:3]=1[CH2:4][C:5]1[NH:13][C:12]2[C:7](=[N:8][C:9]([F:15])=[N:10][C:11]=2[NH2:14])[N:6]=1.C([O-])([O-])=O.[Cs+].[Cs+].S(C1C=CC(C)=CC=1)(O[CH2:34][CH2:35][CH2:36][C:37]#[CH:38])(=O)=O>CN(C=O)C>[F:15][C:9]1[N:8]=[C:7]2[C:12]([N:13]=[C:5]([CH2:4][C:3]3[CH:16]=[C:17]([O:22][CH3:23])[C:18]([O:20][CH3:21])=[CH:19][C:2]=3[Cl:1])[N:6]2[CH2:38][CH2:37][CH2:36][C:35]#[CH:34])=[C:11]([NH2:14])[N:10]=1

Komponenten

Versuchsvorschrift

A solution of 8-(2-chloro-4,5-dimethoxy-benzyl)-2-fluoroadenine (22 mg, 0.065 mmol), Cs2CO3 (21 mg, 0.065 mmol), pent-4-ynyl tosylate (20 mg, 17.3 L, 0.085 mmol) in anhydrous DMF (170 L) was stirred at 50° C. for 2 h. Following solvent removal, the product (14 mg, 53.8%) was collected through silica gel column purification (CHCl3:EtOAc:hexanes:i-PrOH at 20:10:20:1). 1H NMR (400 MHz, CDCl3) 6.91 (s, 1H), 6.67 (s, 1H), 6.01 (bs, 2H), 4.31 (s, 2H), 4.14 (t, J=7.5 Hz, 2H), 3.87 (s, 3H), 3.75 (s, 3H), 2.24-2.20 (m, 2H), 2.01-1.99 (m, 1H), 1.97-1.88 (m, 2H); 13C NMR (100 MHz, CDCl3) 1596, 157.9, 156.3, 152.3, 148.9, 146.0, 124.9, 112.7, 82.3, 69.9, 56.3, 56.2, 42.2, 31.2, 28.1, 15.9; MS m/z 404.1 (M+H)+. HPLC: (a) 95.1% (65% water-35% acetonitrile); (b) 96.7% (35% to 45% acetonitrile).